Messages in this thread | | | From | samarth saxena <> | Date | Tue, 22 Jun 2021 23:07:27 +0530 | Subject | Question for CXL Drivers and ACPI required for a CXL mem device? |
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Hi All,
I am trying to bring up a system with a CXL Type 3 device using Qemu. I see that the device is visible in the operating system at the location: /dev/cxl/mem0 And a persistent memory attached to the device at /sys/bus/cxl/devices/mem0/pmem
But I am unable to understand how to use this memory (pmem). How can the Linux map this Pmem instance to user space. Also, CXL device can be a non persistent memory too. How will that be visible?
Which all drivers are necessary to use a CXL Type3 device as a memory expander? Is there any ongoing development in the kernel?
Regards, Samarth
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